A tiny collection of traditional Japanese woodblock prints, open only when the owner feels like it.

This mesmerizingly colorful pond looks like a scene straight out of a fairytale.

The old fire tower is one of the last of its kind in the United States.

A science fiction-inspired apartment building designed by a famous Spanish architect.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

A chance to sleep among the firs and pines of the Oregon forest.

An ancient Viking village in North America that predates Columbus by 500 years.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

Giant animal sculptures are created with the rice straw leftover from the fall harvest each year.

This magnificent stepwell is designed as an inverted temple and adorned with 1,500 sculptures.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

A sobering museum dedicated to landmines and the personnel working to remove them from Afghanistan.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

At the United Kingdom's only residential library you can sleep among the books.

A meow-velous tribute to a beloved street cat, made famous on the internet.

The vertical-axis windmills of ancient Persia have been grinding flour for 1,000 years and counting.

A thick blanket of beautiful pampas grass cloaks this unique Japanese landscape.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.